X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fplugins%2Fioam%2Fencap%2Fip6_ioam_trace.c;h=234485757987c22e1c762f3f1d3baafbef2cda6c;hb=954c707972bf7efcd227e26d9679544813a78115;hp=53fb63ea6fd1f35e5b98e335192bcfc1745f3189;hpb=f8d50682cd1245f6f5ce4c846ca6f1bdc11255a6;p=vpp.git

diff --git a/src/plugins/ioam/encap/ip6_ioam_trace.c b/src/plugins/ioam/encap/ip6_ioam_trace.c
index 53fb63ea6fd..23448575798 100644
--- a/src/plugins/ioam/encap/ip6_ioam_trace.c
+++ b/src/plugins/ioam/encap/ip6_ioam_trace.c
@@ -222,14 +222,16 @@ ip6_hbh_ioam_loopback_handler (vlib_buffer_t * b, ip6_header_t * ip,
   ioam_trace_option_t *opt;
   udp_ping_t *udp;
 
+  b0 = vlib_buffer_copy (hm->vlib_main, b);
+  if (b0 == NULL)
+    return;
+
+  buf_index = vlib_get_buffer_index (hm->vlib_main, b0);
   next_node = vlib_get_node_by_name (hm->vlib_main, (u8 *) "ip6-lookup");
   nf = vlib_get_frame_to_node (hm->vlib_main, next_node->index);
   nf->n_vectors = 0;
   to_next = vlib_frame_vector_args (nf);
 
-  b0 = vlib_buffer_copy (hm->vlib_main, b);
-  buf_index = vlib_get_buffer_index (hm->vlib_main, b0);
-
   vnet_buffer (b0)->sw_if_index[VLIB_RX] = 0;
   vnet_buffer (b0)->sw_if_index[VLIB_TX] = ~0;